found: Encyc. Brit.:(Yezhov, Nikolay Ivanovich, 1894-1939? Russian Communist Party official and chief of the NKVD. He was responsible for the terror purges known as the Yezhovshchina)

found: Bolʹsh. sov. ėnt︠s︡ikl., 3rd ed.:v. 1, p. 426 (Ezhov, Nikolaĭ Ivanovich, 1895-1940: Soviet party activist and Commissar of the Gos. bezopasnosti in 1937, chief of the NKVD during 1936-38; in 1939 he was arrested and then executed)